1. Department of Chemical Biology and Organic Chemistry, Institute of Biomembranes, and Department of NMR Spectroscopy, Bijvoet Center for Biomolecular Research, Science Faculty, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands, Department of Medicinal Chemistry and Chemical Biology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands, and Department of Medical Microbiology, University Medical Center Utrecht, Heidelberglaan 100...